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Related Concept Videos

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
Chronic Pharyngitis01:23

Chronic Pharyngitis

Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Asthma I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
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Chronic Obstructive Pulmonary Disease I: Introduction

Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
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Chronic Inflammation

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Immunofluorescent Labeling in Nasal Mucosa Tissue Sections of Allergic Rhinitis Rats via Multicolor Immunoassay
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Chronic rhinosinusitis: from one disease to different phenotypes.

Claus Bachert1, Nan Zhang, Thibaut van Zele

  • 1Upper Airway Research Laboratory (URL), Department of Oto-Rhino-Laryngology, Ghent University Hospital, De Pintelaan 185, Ghent, Belgium. claus.bachert@ugent.be

Pediatric Allergy and Immunology : Official Publication of the European Society of Pediatric Allergy and Immunology
|July 6, 2012
PubMed
Summary

Chronic rhinosinusitis (CRS), a common European condition, presents distinct phenotypes and inflammatory endotypes. Understanding these differences, including biomarkers and asthma links, is crucial for effective treatment.

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Area of Science:

  • Immunology
  • Otolaryngology
  • Pathology

Background:

  • Chronic rhinosinusitis (CRS) affects approximately 11% of the European population.
  • Clinical differentiation of CRS includes phenotypes with and without nasal polyps.
  • Immunohistochemical studies highlight TGF-ß as a key regulator in CRS remodeling.

Purpose of the Study:

  • To explore the differentiation of CRS based on inflammatory endotypes.
  • To investigate the role of T helper cell cytokines (e.g., interleukin-5) and IgE antibodies.
  • To understand the link between CRS endotypes and asthma comorbidity.

Main Methods:

  • Clinical differentiation of CRS phenotypes.
  • Immunohistochemical analysis of tissue remodeling.
  • Assessment of inflammatory markers, including cytokines and IgE.
  • Evaluation of humanized antibody studies in nasal polyposis.

Main Results:

  • CRS can be classified into distinct endotypes based on inflammatory profiles.
  • Interleukin-5 and IgE antibodies against Staphylococcus aureus enterotoxins are significant inflammatory markers.
  • CRS endotypes show predictive value for asthma comorbidity.
  • Transforming growth factor-beta (TGF-ß) is identified as a key regulator in CRS remodeling.

Conclusions:

  • Further differentiation of CRS beyond clinical phenotypes is essential.
  • Biomarkers are needed to fully characterize the CRS disease spectrum.
  • Understanding CRS endotypes is critical for predicting and managing asthma comorbidity.